PROOFPOINT - SPAM FILTER

Transcription

1 416 Morrill Hall of Agriculture Hall Michigan State University PROOFPOINT - SPAM FILTER Contents PROOFPOINT - SPAM FILTER... 1 INTRODUCTION... 2 HOW DOES FILTERING WORK?... 2 WHAT IS THE QUARANTINE?... 2 WHAT IS AN END USER DIGEST?... 2 HOW DO I USE THE DIGEST ?... 3 WHAT OTHER FEATURES ARE AVAILABLE TO MANAGE MY ACCOUNT?... 3 PROFILE OPTION TO MANAGE MY ACCOUNT4 LISTS OPTION TO MANAGE MY ACCOUNT 4 WHY DO I GET A WARNING MESSAGE WHEN I CLICK ON LINKS IN THE DIGEST?... 5 HOW DO I DELETE MY MESSAGES IN THE QUARANTINE?... 5 WHAT IS A SAFE SENDERS AND BLOCKED SENDERS LIST?... 5 WHAT IS A FALSE POSITIVE?... 5 WHAT IS A FALSE NEGATIVE?... 6 WHAT IS A SPAM POLICY?... 6 WHAT IS THE WEB APPLICATION?... 6 YOUR VIEW-WEB APPLICATION... 7 MY ACCOUNT... 8 LISTS... 8 QUARANTINE... 9 QUARANTINE LINKS MENU LOG OUT OF PROOFPOINT

2 Introduction The purpose of this document is to explain how the that originates from outside this organization is processed, and to describe the tools that you can use to manage your personal spam quarantine. This does not apply to internal messages. To protect this organization from virus attacks and to protect you from receiving hundreds of spam messages, the Proofpoint Messaging Security Gateway an anti-spam and anti-virus product, filters all incoming . Proofpoint uses an advanced machine learning filtering technique called MLX to ensure that no valid mail is improperly filtered. For more information about the Proofpoint Messaging Security Gateway and MLX, you can visit Proofpoint s web site at How does filtering work? The Proofpoint Protection Server filters all incoming (and outgoing) . Depending upon Proofpoint Protection Server rules and policies, messages that contain a virus or spam, can either be deleted or scored. In the case of spam, the message score indicates the probability that the message is spam so a message scoring 100 would have 100% chance of being spam (definite spam) and a message scoring 0 would have 0% chance of being spam (legitimate correspondence). Messages scoring high enough to probably be spam are quarantined, and messages scoring below 50 are sent directly to your inbox. What is the Quarantine? The Quarantine is a location on a server where messages that are suspected to be spam are stored temporarily so that they can be reviewed and retrieved if necessary. System administrators have the ability to search for messages on a user s behalf. You may also review and take action on your own quarantined through the use of the End User Digest. Messages that are not released from the Quarantine are automatically deleted after a designated period of time. What is an End User Digest? If messages addressed to you were sent to the Quarantine, you will receive an notification, called an End User Digest (or Digest), in your mailbox. The Digest provides you with a list of the messages addressed to you that are stored in the Quarantine. You can look at the message subject headers to determine their content and decide what actions you want to apply to the messages. You may also receive an empty Digest, which is simply an message indicating that you have no messages in the Quarantine. You may want to receive a Digest even if it doesn t contain any messages, so you can continue to manage certain aspects of your . 2

3 How do I use the Digest ? The Digest will provide you with a list of all of the spam that has been quarantined for your account since you received the last Digest update. You will see a list of these messages and columns that indicate the subject, sender, and time received for each . You will have three separate links available to you to complete an action on each message: View Allows you to view the quarantined in a safe manner on the web. Release releases the message from the Quarantine to your normal inbox. Safelist releases the message from the Quarantine to your inbox and adds the sender to your personal Safe Senders list. All future from this sender will not be checked for spam. Not Spam reports that the message was a false positive (that is, it should not have been classified as spam). In this case, further training is done to ensure that similar messages are not caught as spam in the future. Other links in the Digest provide additional functionality. These links are not related to individual quarantined messages. The following links provide additional Digest management: Request New End User Digest immediately generates a new Digest with up-to-the-minute information about quarantined messages. Note: this Digest will contain a list of all messages currently in the Quarantine, not just those received since the last scheduled Digest update. Request Safe/Blocked Senders list sends you a list of all entries currently on your personal Safe and Blocked Senders List. Manage My Account allows you to change account preferences, as well as actively manage your Safe Senders and Blocked Senders lists using a web interface. What other features are available to manage my account? The Manage My Account link gives access to a separate web interface that will allow you to manage your Safe Senders and Blocked Senders lists, change the preferred language interface for your Digest, and adjust Digest preferences. To access these features, click the Manage My Account link in the Digest. A separate browser window pops up on your screen and your personalized account management page will load in this window. You do not need to authenticate to your account management page because a secure code is generated in your personalized Digest that ensures that only you have access to change your settings. You have the following options to choose from in your account management page. Click the name of the option in the left navigation pane (bottom of the navigation pane): Lists provides tools to manage personal Safe Senders and Blocked Senders lists. Profile controls Digest settings and language preferences. Quarantine List of messages believed to be spam. You can check here for message and o Not Spam take message out of quarantine and indicate that they are not spam o Release Release the message from quarantine o Delete Delete the message from the system o Safelist Put the senders address in your Safe Senders List 3

4 Profile option to manage my account The Profile option displays a My Settings view and the Save, Request Digest, and Refresh links. Links Menu: Save saves your settings each time you make any changes. Options Dropdown Menu o Request Digest sends you an updated Digest. o Refresh refreshes the view. My Settings: Send digest with new messages this is the default setting. You will only receive a Digest when you have new messages in the Quarantine. Send digest even when I have no new messages this choice will send you a Digest whether or not you have new messages in the Quarantine. If there are no new messages, you will receive an empty Digest. Preferred Language you can select a language from the drop-down list. This is the language that displays in your Digest and in your Manage My Account browser window. What type of spam detection do you want? You can select a spam policy from the listed choices. The policies determine how you want your filtered for spam. Lists option to manage my account The Lists option displays the Safe Senders List and Blocked Senders List views where you can manage your personal lists of safe senders and blocked senders. The spam detection technology provided by Proofpoint s adaptive machine-learning engine is highly accurate and you are not required to add entries to your Safe Senders or Blocked Senders lists. This feature is available to you if want to create your own personal lists. Links Menu: Click Safe Senders List or Blocked Senders List in the left navigation pane to choose the list you want to manage. New provides a text field so you can add an address or domain to your list. Edit lets you make changes to an address already on your list. You need to first select (click the check box) for the address you want to change. Delete deletes the selected address from the list. Options Dropdown Menu o Select All selects all of the addresses on the list. o Unselect All un-selects all of the selected addresses on the list. o Request Digest sends you an updated Digest. o Refresh refreshes the view. 4

5 Safe Senders List: sent from addresses or domains on the Safe Senders List will not be filtered for spam, but will be filtered for viruses. Blocked Senders List: sent from addresses or domains on the Blocked Senders List will automatically be discarded so that you will not receive future s from them. Note: if a spam message does make it through to your inbox, you should not add that address to your Blocked Senders List since spammers rarely use the same address twice. Why do I get a warning message when I click on links in the Digest? It is normal to see an Invalid Certificate warning when clicking on the links in the Digest. You can safely accept the certificate warning and continue. How do I delete my messages in the Quarantine? There is no need to delete your messages in the Quarantine. If you do not release a message from the Quarantine, it will automatically be deleted after 14 days. If you look at the messages in your Digest and determine that all of them are spam, you do not need to do anything. The messages will automatically be deleted from the Quarantine. What is a Safe Senders and Blocked Senders list? There are two types of Safe Senders lists: the Global Safe Senders List and your personal Safe Senders List. Both are simply lists of legitimate senders of . The administrator controls the Global Safe Senders List, which applies to everyone in the organization. You control your personal Safe Senders List to which you can add the addresses of people, organizations, and mailing lists from which you do want to receive mail. If a sender's address is included in the Safe Senders List, the Proofpoint Protection Server does not filter the message for spam. (However, it still filters the message for a virus or inappropriate content.) There is also a Global Blocked Senders List and a personal Blocked Senders List. These lists contain addresses of people, organizations, and mailing lists from which you do not want to receive junk . What is a false positive? A false positive is an incorrectly identified as spam. If an message is scored as spam and sent to the Quarantine, but it really is a legitimate message from a legitimate sender, you can report it as a false positive. In the future, messages that have the same characteristics as the message you reported will not be placed in the Quarantine for containing spam. 5

6 What is a false negative? A false negative is an incorrectly identified as not spam. An message that is incorrectly delivered to your mail box because it was not identified as spam can be reported as a false negative. Spammers are very clever and are always seeking ways to trick products like the Proofpoint Protection Server into delivering spam to your mailbox. Proofpoint sends frequent updates to our organization in an attempt to stay one step ahead of the spammers. What is a spam policy? Spam policies determine how the spam sent to you will be processed. For example, your spam could be deleted or quarantined. You can only select your own spam policy if you are allowed to Manage My Account. What is the Web Application? The Web Application allows you to view your quarantined messages and manage your account using a web browser. You can enter the Web Application by clicking on any of the following in a Proofpoint View, Release, Safelist, Not Spam, Manage My Account, and Delete 6

7 Your View-Web Application The first view you see is My Profile, where you can change My Settings and manage your Account. On the My Settings page, you can make choices for your preferred language, whether or not you want to receive an empty Digest, and which spam policy you want applied to your messages. The left side displays links for each of the tasks you can complete in the browser: Lists Safe Senders and Blocked Senders lists. Profile You can change your preferences on the Settings page and view your aliases on the Account page. Quarantine contains a list of your messages in the Quarantine. 7

8 My Account Click Account under Profile on the left side to view your aliases. You cannot make any changes to this page. Lists Click Lists on the left side navigation to view your Safe Senders and Blocked Senders lists. 8

9 To add a Safe Sender to your list: 1. Click Safe Senders List on the left side. 2. Click New on the top of the page. 3. Enter an address into the field. 4. Click Save. Follow the same procedure to add entries to your Blocked Senders list. Quarantine Click Quarantine on the left side navigation to view your messages in the Quarantine, and Viruses. This page displays messages addressed to you that were classified as spam and are sitting in the Quarantine. It also contains a folder with any Viruses that were sent to Quarantine. You can apply several actions to the messages in Quarantine and Virus folders. To select one or more messages, select the check box next to the message before you apply the action. All of the actions are displayed in the links menu on the top of the page. 9

10 Quarantine Links Menu Find displays the fields to search for a specific message using search criteria such as who sent the message, the subject line, or the age of the message. Not Spam releases the message to your inbox, and in the future, messages like this one will not be classified as spam. Release releases the message to your inbox. Delete deletes the selected messages from the Quarantine. Safelist adds the sender of the selected message to your Safe Senders list. In the Quarantine Options dropdown menu, you will find: Select All selects all of the messages so that you can apply the action to all of the displayed messages. (For example, you may have 100 messages in the Quarantine, but only 20 are displayed. The action applies to the displayed messages.) Unselect All unselects all of the selected messages. Request Digest sends an updated Digest to your inbox. Refresh refreshes the view on the page. For example, if any new messages have been added to the Quarantine while you had the browser open, they will be added to the list. Log Out of Proofpoint In the top tool menu of Proofpoint, the logout button is located on the far right side. Click on the button to successfully log out of Proofpoint. 10

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